Process of producing light-sensitive systems



lulosic others, of resins or polymerisates, sheets of metais caber and the libe may be enected according to the method :own in the photographic industry for the production of photographic lms, plates, and papers.

What claim 1. In a method oi producing light sensitive systems of silver halides, in which a mixture of silver halide and an alien substance acting as sensitizer is heated to temperature at which said alien substance is incorporated into said silver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, the additional step of subjecting the fused mixture which subsequently forms the light sensitive Systems to an oxidizing treatment while still in its fused condition by treating the fused mix ture with oxygen or oxygen containing gases.

2. ln a method of producing light sensitive systems of silver halides, the steps of heating a mixture of silver halide and an alien substance acting as sensitizer to a temperature at which said alien substance is incorporated into said sil ver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, subjecting the mixture, while in a molten condition, to an oxidizing treatment, and cooling the resulting product.

3. In a method of producing light sensitive systems of silver halides, in which a mixture of silver halide and an alien substance acting as sensitizer is heated to a temperature at which said alien substance is incorporated into said silver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, the additional steps of treating the mixture, While still in molten condition, with oxygen which is led over the molten mixture, and cooling the resulting product.

if 1:, uciorg lig i.; systems of s ver halides, in which a mixture o1' silver halide and an alien substance acting as sensitizei` is heated to a temperature at which said alien substance is incorporated into said silver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, the additional steps of subjecting the mixture while still in a molten condition to an oxidizing treatment, by passing oxygen through the molten mixture, cooling the latter, and then commnuting the resulting solid product.

5. In a method of producing light sensitive layers of silver halides, including the steps of heating a mixture of silver halide and an alien substance acting as sensitizer to a temperature at which said alien substance is incorporated into said silver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, then atomizing the fused mixture by an oxidizing gas and incorporating the nely disintegrated light sensitive systems thus produced into a colloidal carrier.

6. In a method of producing light sensitive layers of silver halides, in which a mixture of silver halide and an sensitizer is heated to a temperature at which said alien substance is incorporated into said sil-- ver halide by fusion and in which the halogen liberated by dissociation during the heating is removed, the additional steps of subjecting the mixture while still in a molten condition to an oxidizing treatment, cooling the oxidized mixture. and incorporating the light sensitive systems thus produced in a inely disintegrated condition into a colloidal carrier.

OSlAlD STASIW.

alien substance acting as 

